Structure of a clamshell bucket and a hydraulic control circuit
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United States of America Patent
Stats
-
Dec 12, 1995
Grant Date -
N/A
app pub date -
Nov 28, 1994
filing date -
Dec 10, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To excavate sticky soil such as clayey soil, left and right buckets of a clamshell bucket are slightly inclined, thereby reducing the force to pull the buckets from a hole. The clamshell bucket includes left and right buckets which are closable, thereby holding soil, and a hydraulic cylinder having a stroke reserve so as to be further extendible after the buckets are closed, whereby the closed buckets can be displaced sidewardly relative to the vertical.
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Cited Art Landscape
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